Selective signaling apparatus.



D. W. KNEISLY.

SELECTIVE SIGNALING APPARATUS.

AYPLICATION FILED HAYS 1909.

1 335,97 1. v Patented Aug. 20, 1912.

3 SHEETS SHEBK 1.

as X mmm wumml a) m I )33 8mm I D. W. KNEISLY.

SELECTIVE SIGNALING APPARATUS.

APPLICATION FILED MAY 3, 1909;

Patented Aug. 20, 1912.

3 $HEETSSHEET 2.

D. W. KNEISLY.

SELECTIVE SIGNALING APPARATUS.

APPLICATION FILED MAY3, 1909.

1 ,O35,97 1 v Patented Aug. 20, 1912.

3 SHEETS-SHEET 3.'

' reason.

.DANIEL W. KNEISLY, OF DAYTON,

OHIO, LOCKOUT MFG. (70., OF DAYTON,

.essreuoit onto, A oozer'ona'rroiv or onto] SELECTIVE SIGNALINGAPPARATUS.

v Specification of To all whom it may concern:

Be it known that I, DANIEL "W. Knmsnv,

' a citizen of the United States, residing at Dayton,

na-lin Apparatus, of which the following is a specification.

My invention relates to telephone apparatus and particularly to lockoutdevices for common or party line telephones.

The objects of the invention are to sim plify the structure as well asthe means and mode of operation of such devices whereby they will notonly be cheapenedn construction but will be rendered morejpositive andefficient in operation, easily operated, and unlikely to get out ofrepair.-

One of the primary objects of the inven tion is to provide a device ofthis character in which only the instrument selected from the series ofsimilar instruments on a common line will be rung in calling thesubscriber, and particularly to provide a device whereby any subscriberother than the one called will be prevented from using his instrumentuntil the line is returned to normal, thus preventing interruption to aconversation and'preventing the conversation being overheard by otherparties on the common line.

A further object is to provide means for returning the respectiveinstruments to normal instantly atthe -will of the operator without thenecessity of completing a series of stepup operations as is usual insuch devices. 1

'A further primary object of the present invention is to provide aninstrument which may readily be introduced into the circuits of existingcommon party lines without the necessity of rearranging the circuits orin any way interfering with the telephone mechanism. A further primaryobject is to provide means whereby thestep up mechanism may be renderedinoperative by the subscriber or; maintained in its normal condition,thus enabling the central operator to call back i on the line and selectanother instrument on the same. line independent of the callinginstrument-,- and further to provide means whereby the callinginstrument will thereby be temporarily out out of the talking circuitsothat the subscriber can not, by block- !110 .trnn naYrongnLnrrroun Lettes new, Patented Aug. 2o, 1e12 Application filed May 3, 1909. Serial No.493,730. I

ing his instrument, be enabled to overhear conversations.

With the above primary andv other incidental objects in view, as willmore fully appear in the specification, the invention consists of thefeatures of construction, parts and combinations thereof, and mode ofoperation, or their equivalents, as hereinafter.

described and set forth in theclai'ms.

' In the drawings, Figure 1 is a diagram matio- View indicating thecircuits of the central operating station and one subscriber stationincluding the telephone and the loc c out mechanism. Fig. 2 is a sideelevation of the assembled lockout device. Figs. 3, 4, and 5 areenlarged detail views of a portion tions or stages of operation. Fig. 6is an end view of the assembled lockout device. Fig. 7 is a :top planview of the contacts or circuit terminals. Fig. 8 is perspective view ofthe detent pawl, the polarized ar- -mat-ure and means for locking theparts. Figs. 9 and 10 are detail perspective views of the polarizedarmature and locking means therefor. 1.1. is bottom" plan view or" theassembledlockout device.

Like parts are indicated by similar characters of reference throughoutthe several views.

The device shown in the drawings and hereinafter described is designedto be one of a series of similar instruments located on a common orparty line and adapted to be operated from a central station by a seriesof separate impulses sent over the line, each instrument being adaptedto be released or brought into talking condition by a definitepredetermined number of impulses. The construction is such that only oneinstrument is ordinarily in the talking circuit at a time, the remaininginstruments of the line being maintained. in an inoperative condition.However, the present invention in volves means for bringing several ofthe instruments on a common line in talking 'condi'ion at the same time.

In constructing the device there is employed a support or main frame 1preferably of metal but which may be oi any other suitable material.Supported on brackets 2 and 3 projecting from the 'main frame is anelectromagnct 4t bridged across the main line and excited by a currentfrom the central station. A permanent magnet 5 is also oi the lookoutmechanism in differentposisupported on the bracket 2 and extends ad- '8carried on an oscillatin jacent to the electromagnet 1. The bracket 2 isof iron connecting the cores of the respective coils of the ma net 4.Pivoted at 6 on the frame 1 is an oscillating sector having in theperiphery thereof a series of notches or ratchet serrations. Theseratchet serrations are engaged by an actuating pawl lever 9 pivoted at'10 to the bracket 3. T e lever 9 carries below its pivoted point 10 anarmature 11 attracted by the electromagnet 4: to oscillate said leveragainst the tension of a spring 12 which tends to oscillate the lever tonormal after each movement due to an electric impulse through the magnet4. The actuating pawl; 8 engages the oscillating sector 7 slightly abovethe pivotal point thereof or eccentric therewith, whereby the pressureon said sector by the pawl due to the pull on the spring 12 upon thelever 9, will cause a revoluble movement of the sector. The op eratingpawl 8 is pivoted to the lever 9 and is permitted a slight pivotalmovement at each oscillation of said lever due to the elevation of theparticular notch of the sector 7 with which it is engaged. The movementof the sectorand pawl, however, is limited to the distance of one toothor notch at each operation by a pin 13 in the main frame which arrestsor limits the upward movement of the pawl 8. The actuation of the sector7 is further assisted by an inclined cam surface 14 on the underside ofthe pawl 8, which, during the forward movement of the pawl, engages apin 15 also in the main frame an thereby serves to elevate the pawl.Upon the oscillation of the lever 9 by the attraction of theelectromagnet 4, the pawl is withdrawn from engagement with the sector 7and when the cam surface 14 has receded beyond the pin 15 the pawl 8drops to a position to engage the next notch of the series as'shown indotted lines in Fig. 1. When the electric current is interrupted and themagnet 4 no longer attracts the armature 11, the spring 12 will returnthe lever 9 to normal position, causing the pawl 8 to engagethe nexttooth or notch of the series and thereby oscillate the sector 7 untilarrested by the pin 13 as shown in solid lines in Fig. 4. A springactuated detent arm 16 is pivoted'o'n the main frame and normallyengages the ratchet teeth of the sector 7 to maintain the sector in itsoperated position.

Pivoted to the lower portion of the detent arm 16 is a swingingpolarized armature 17 that when the controlled by the electromagnet 4and permanent magnet 5 and caused thereby to swing about its pivotalconnection with the detent arm 16 into and out of the path of thecontact screw or stud 18 projecting from the armatiire 11. Theconstruction is such K olarized armature 17 is out of the path of t estud 18, as shown in Figs.

7 through a step by step movement, the sector being maintained in itsoperated position by the detent arm 16 under the influence of the spring19. However, upon the reversal of the direction ofthe current throughthe electromagnet 4t the swinging polarized armature 17 will be causedto move into the path of the stud 18 and upon the oscillation of thelever 9 due to the attraction of the armature 11 by the electromagnet 4,the stud 18 will engage the swinging polarized armature 17 and therebyoscillate the detent 16 on its pivotal connection 20 causing the withdrawal of the detent arm 16 from engagement with the ratchet-teeth ofthe sector 7 permitting the sector to return to normal position, At itsupper extremity the lever 9 carries a contact terminal 21 directlyconnected with the main line. Supported on the upper portion of the mainframe 1 is a ringing circuit terminal 22 and interposed between theringing c1rcu1t terminal 22 and the movable terminal 21 on the lever 9is a talking circuit terminal. '23. The arrange ment is such that by thelimited movement of the lever 9 the terminal 21 is brought into contactwith the talking circuit terminal 23 thereby closing the talking circuitand enabliu g the subscriber to talk with the central operator. By anadditional oscillation of the lever 9 the talking circuit terminal 23 isdeflected suflicient to contact theringing circuit terminal through theterminal 23 interposed between the ringing circuit terminal 22 andthemovable terminal 21. In the series of notches or ratchet teeth in thesector 7 there are two notches of greater depth than the others :--adeep notch a: which varies in its relative location in each sector ofthe series of instruments on the common line aocording to the number ofsteps or impulses required to bring the instrument into operativecondition; and, a second deep notch 'y whichis the initial notch of theseries and which is of less depth than the notch 00 but of greater depththan the remaining notches. The notch j is similarly located in each ofthe instruments; that is, it is the initial notch of the series. Thesecond notch ofthe series in each of the instruments is a shallow notch.The notch m may occupy any of the remaining positions on the sector butis differently located in each instrument. The adj ustmentof the partsis such that when the actuating pawl 8 is engaged. in the deep notch a".the ringing circuit between the terminal 21 on the lever 9 and theterminal 22 is completed through the contact of the ter- -minal 21 withthe talking terminal 23 {and the contact of the terminal 23 which isflexed. by the engagement of the terminal 21 into contact with theringing circuit ter'minal22.

Thus, when the deep notch-a1 is engaged" the actuating pawl 8 both thetalking c1'r-' lever 9 and the adjustment is such that when the pawl 8.is engaged in the said notch}; the movable terminal 21 on the lever 9will contact the talking circuit terminal 23, but

I the talking circuit terminal 23 will not, in

ringing circuits are inai flexed. sutlicient to contact the terminal '22and the tin gmg This is this case, be ringing circuit circuit terminalwill remain open. clearly shown in Fig:

W'hen theactuating pawl 8 is engaged in one of the shallow notches notonly will the ringing circuit be broken by the talking circuit terminalbeing held out of contact with the terminal 22 but'thc talking circuitalso will be broken by the movable terminal 21 being held out. of.contact with the talking circuit terminal 23. The engagement of theactuating pawl -8 with the notches of the sector 7 limits theoscillation of the lever 9 permitting a greater oscillation whenengaging the deepest notch :10 thereby closing both ringing and talkingcircuits permitting less oscillation when engaging the medium deep notchy thereby closing only the talking circuit and permitting the lessoscillation of the lever 9 when engaging the shallow notches in whichcase both the talking and 'ntained open as is particularly shown in Fig.l.

The normal positions of all the instru- I ments on-the line are with theactuating pawl in awl 8 enga cs 8 in the initial deep notch y whichpermits the lever 9 to oscillate suiliciently to cause the movableterminal 21 to contact the talking circuit terminal 23, thus closing thetalking circuit and permitting any ,subscriber on the common line tocommunicate with central upon removing the receiver from the hook. Itwill be understood that the normal condition of all the instruments onthe line is with the talking circuit closed and the ringing circuitopen, the actuating pawl 8 being engaged in the medium deep notch y] asshown in Fig. 3. However, the first step up operation whereby theactu.at the second notch or. tooth which in every case is opens both thetalking and ringing circuits as shown in Fig. 4. Subsequent step upoperations cause diiiercnt instruments on the common line to be broughtinto operative condition by the closing or both the talking and ringingcircuits upon the engagement of the actuating pawl 8 with the extremedeep notch 02 as shown in Fig. 5.

After the respective devices have been stepped up the desired instrumentselected and conversation finished, it becomes necessary to return thedevices to normal condiits pivotal the shallow notch .1

tibn preparatory tothe next call. Whenit is desired to return the partsto normal an impulse is sent over the line in a reverse direction fromthe central station, thus reversing the poles of electrom agnet and cansing the polarized armature 1.7 to move on connection to thepositionindicated in dotted lines in Fig. 6, inv which p0 sition it will be inthe path of the stud 18 carried in the armature 11 and through theattraction of the-armature 11 by the magnet e the stud 18 will engagethe polarized a1"- ma'ture 17 and oscillate the detent lever 16 uponitspivotal connections 20, to withdraw the detent lever from engagementwith the ratchet teeth of the sector 7, whereby permitting the sector toreturn to the normal position when the actuating pawl 8 Willagain restin the initial or medium" deep notch 3 as before described. The movementof the polarized armature 17 due to the engage- "inentot the stud 18, isindicated by dotted lines in Fig. 9. Y

It will thus be seen that .the step up or selecting operation and therelease or return to normal position are both accomplishe by theoscillation of the lever 9 due to the attraction of the single armature11 by the magnet Whether the oscillation of the lever} accomplishes thestep up or therelease of the sector is determined'by the position of thepivoted polarized armature 17 which is moved into or out of the path. ofthe stud 18 according to the direction in which the electric impulse issent through the magnet t. .The oscillation of the lever 9, independentof the polarized armature 17 when said polarized armature is out of thepath of the stud. 18, will, upon the return of the lever 9 to normal,cause the sector to he stepped up the distance of one notch. However,when the polarized armature 17 is moved into the path 9 and the detentlever 16 also move in unison due to the attraction of the armature 11 bythe magnet l which will not only withdraw the actuating pawl 8 but alsothe detent leof the stud 18, the lever ver 16 from engagement with thesector thereby permitting the sector-to return to normal. 111. case asubscriber wishes to talk with a second subscriber on the same line,provision is made whereby the calling subscriber may lock his instrumentagainst the step up operation therebyv maintaining the actuating pawl 8in the initial or medium deep notch y and the talking circuit closed asin Fig. 3. This is accomplished by means of a slide member 24: mountedto reciprocate on the bracket 3 on the main frame and operated by thesubscriber by the depression of a button 25 protruding from the case ofthe instrument. The slide member 24 is provided witharecess or notch '26within which the extremity of the polarized armature 17 extendskgfldythedepression of the button 25 the slide member 24 is reciprocated and thepolarized armature may be moved about its pivotal connection on thedetent lever 16 into the path of the stud 18 against the influence ofthe electromagnet 4. The slide member 24 is provided with a fingerportion 27 which projects beyond the polarized armature 17 and when thepolarized armature has been moved into the path of the stud 18 by thereciprocatory movement of the slide 24 the finger portion 27 will blockthe movement of the polarized armature 17 due to the engagementtherewith of the stud 18 and thereby prevent the with the detent let'er16 about the pivotal connection 20 thereof. The'slide member 24:

is normally held in its normal position by a spring plate 28 engaging astud 29 on said slide. When the slide member 24 is in its normalposition and the polarized armature 17 is moved into the path of thestud 18 through the influence oi: the electromagnet 4 through which theimpulse is sent in reverse direction; the polarized armature 17 willmove beyond the extremity of the finger-portion 27 of the slide member24: as shown in Fig. 9 in which case it will be permitted to.

} move inward upon'being engaged by the stud 18 thereby operating thedetent lever 16 to withdraw it from the sector 7.

As before described, an unscrupulous person might, by depressing thebutton 25 of his instrument lock his instrument against operation andenable him to overhear conversations. In order to obviate this, thespring plate 28 which returns the slide member 24 to normal ispreferably one blade of a switch 30in the talking circuit as shown inFig. 1

the corresponding blade of which is in con-.

tact with the plate 28 and the circuit closed when the parts are innormal position. However, when the subscriber depresses the button 25 tolock his'instrument against op eration he simultaneously opens thetalking circuit through the flexing of the spring plate 28, thusrendering the instrument inoperative until the button 25 is released.

(J'i'rcu-its.ln Fig. 1 is illustrated (liagrammatically the variouscircuits, operative parts and connections; the central station apparatusbeing indicated at the top and the subscribers instrument at the bottomof the main line a-a common to a number ot bridged across the line; thedrop 1ine 31 f circuit between t the opposite side of the main line by adrop line 32, thus completing the circuitqbetween "the opposite. sides(of the mainline ar.a

through the magnet Land frame. The sub scribers call bellcb is bridgedbetween the terminal 22 on the mainframe 1 and the drop line 31including in the circuit a switch,

closed by the receiver hook when said-hook l is down.- The ringingcircuit is, as follows:

from the main line a through the dropline 32 to the frame, 1;thence-from .the contact 21 to the contact '22 through the intermediateterminal 23; thence through the-switch closed by the receiver hook e andbells b to the drop line 31 and the side a of the main line. Thesubscribers calling mag-- neto c is bridged between-the drop lines 31and 32. The receiver .and transmitter cirv cuits are the usual telephoneconnections. The receiver hook e of the telephone instrumentis connectedthrough the switch 'comprising the plates 28 and 30-wi ththe talkingcircuit terminal 23, which i'n-turn is in contact with the terminal 21on the main frame of the lockout instrument and through the drop line 32with the main line a. The receiver hook is' adapted, when in its downposition, or whencarrying the receiver, .to close the ringing circuitand when the receiver is removed and. the hook moves to its upperposition,--tobreak the ringing circuit and close the receiver andtransmitter circuits as is usual in telephone constructions.

The receiver circuit extends between the re ceiver hook throughthe-secondarybf the coil (Z to the drop line 31 including'in saidcircuit "the'receiver e'and condenser f. The

including: in' the circuit, the" transmitter g and;the battery it. Atthe central. station there are two lines 33 and 34 connected with-themain line a anda through the transmitter circuit extends from the" receiver'hook 6 through the primary of the coil (Z and-thence back to' thereceiv'er'hook,

usual calling and answering jacks not-shown the drawings. The usualannuhciat'or drop is indicated at z and is normally bridged across thelines 33 and 34;"through a switch j. is is tlieloperators instrument, Zis a keyffon sending separate selecting impulses over the "line: to*operate the subscriber s selector fiii'eclialrism."" A pole otliersource oftenergy t. f0 i's;a generator adapted to be ,broughtlln'tothecirfcuiuby the closing O'fthehv'vitchy): e. figure. Atthe right ofthe figure is the Opewhioni ivheii in normal position indicated in ahdf3, the actuating pawl 8 engages" thenotch 3 "and the talking ""tmi ls21 and 23jis thus sending the current through the g'en-' closed. Thesubscriber operates the calling magneto o and removes his receiver fromthe.

' hook, allowing the hook to be lifted by suitable spring action,thereby closing the re- 5 ceiver and transmitter circuits andsimultaneously breaking the ringing circuit. This call is indicated tothe central operator by the annunci'ator drop z'. The-operator moves theswitch-j to cut the -drop1 ou t 'of circuit and to bring the operatorsinstrument is into the talking circuit. Upon receiving the subscriberscall the operatorwill move the switch j'to cut out the operatorsinstrument to bring into the circuitthe ing key Z. The operator willselect or' unlock the key Z to close the circuit a predetermined numberof times as may be necessary to bring theactuating pawl 8 of the desiredinstrument into the deep notch At each closure of the key Z an electricimpulse will pass from the battery m through the key I and switch j tothe line 33, thence to the main "line a and over the drop lines 32andthrough the magnet 4 of every instrument on the line, thencereturning over the dro lines 31, mainline a and central;- station line23, to the battery, thus completing the circuit. Each impulse excitingtlie' magnet t will cause the oscillatory sector 7 to be stepped up onenotch as before described. At the first step or impulse the I actuatingpawl 80f each instrumenton the line will engage the second notch, whichin every instrument is a shallow one. This will holdthe lever 9 in suchrelation that the terminal 21 will be disengaged from the ter minal 23and the talking circuit will be maintained open At each subsequent stepofthe respective instruments the actuating pawl 8 of some one of theSBI'lGSIOf instru- ,ments will engage the deep notch :12 said .lriotcha". being difi'erently located'in each inisfirument. The instrumentillustrated in the '45 Edi-swings is the number nine instrument of theseries being brought into operation on the tenth step or impulse. The'first step serves to break the talking connections between thecontacts21 and 23, while the ninth subsequent step will release the illustratedinstrument by the actuating pawl 8 engag- :ing the deep notch. :22 whichwill permit the lever. 9 .to'oscillate sufiiciently to close boththe-talking and ringing circuits. The subscriber is then called byclosing the switch 7?,

v erator 0 over the line 33 51nd main line a to the drop line 32; thencetlirou h the frame 1 to the lever 9 the terminals 1, 23, and 22, throughthe bell b to the drop line 31 and y to thereturn, mainline a andcentral station line 34 to the opposite pole of the generatorp. At thetime the actuating pawl 8 of the illustrated or called instrument oni 5gages the notch the pawl 8 of every other' impulse send desiredinstrument by operating the.

' respective instruments. ity of the magnet 4 will cause the return anceaccording to the position instrument on the line is engaged with ashallow notch and the ringing and talking circuits of such instrumentare the subscriber desires. to talk with a second party on the samecommon line after calling the central operator as before described, he

will depress the button 25 of his instrument which will operate theslide member 24: to move the 'swingingpolarized armature 17 into thepath of the stud 18 at which time the finger portion 27 of the slidemember .24 will be thrust behind the polarized armabroken. If. I

ture 17 and will thereby prevent the oscil lation of the detent arm 16when contacted by the stud 18 and by thus blocking the movement of thearmature 11 when attracted by the magnet 4, the oscillation of the lever9 is effectually prevented and the sector 7 remains in its normalposition with the actuating pawl 8 engaging the initial notch y and thetalking circuit closed as in Fig. 3. While the calling subscribersinstrument is thus held inoperative the remaining instruments on theline are stepped up in themanner before described to selectthe desiredinstrument which will bring the two instru-' ments, the callinginstrument and the select ed instrument into the talking circuit at thesame time. When it is desired to return the instruments to normal afterthe completion of the conversation, the key Z is closed to send anim'pulse 1n the opposite direction over theline through the magnet 4 ofthe The changed polararmature into the'path of the stud 18 therebycausing'the detent arm 16 to be oscillated by the oscillation of thearmature'll to dis engage it from the sector 7 and at the same timewithdrawing the actuating pawl 8.

When so disengaged, the sector will be returned to normal by gravity.While a donble metallic circuit ar-a "h as been described, the main linewire 0 might be dispensed with under certainconditions, and the lines 31and 34 might be grounded at 35and 36 in Fig. 1, "thus completing thecircuits through the ground instead of through the line aIf-metallic-talking and selecting circuits are desired, the ringing maybe accomplished through the ground between points 37 and 38 in Fig. 1.

It willthus be seen that only two con- '3 ductors' are required to formboth the" operating and talking circuits one of which conductors may beground, or two metallic conducto-rs maybe employed with an additionalgrounded ringing" circuit. However, the preferred. form is two metallicconductors as shown in solid lines in the drawing. It will be noted thatno adjustment of resisth ofthe curmenton the line or the, stren of theinstru- I the device is actuated by the electrical impulse, theoperations aiie erformed independent of the strength (if zhecurrent, theinstrument being unaffected by any variations'thereof, providing-it isalways of suflilimited to the field of telephony, 'rlout is equallyapplicable to. other purposes, wherein it is desired to select someparticular si .nal apparatus or electrical device of a series connectedin a common circuit, the instru ment is especially adapted for use 1nrailway signaling work and similar purposes. :wherein it would only benecessary to substitute the. electrical control sign. flipper ratus forthe subscribers telephone'instrument in the construction shown in thedrawings. I, therefore, do'not limit the invention totelephones.-Furthermore, it will be impossible for a subscriber to monopolize thehue or for an unscrupulous subscriber to persist in eavesdropping byholding the opcrating button 25 in depression and thereby maintainingthe instrumentin normal condition as before described. When a subscriberrefuses'to vacate the line upon requestbut continues to hold the pushbutton of his instrument depressed the operator may nevertheless stepthe instrument up zand thereby'break the talking circuit by operation.tion will not affect any oftheinstruments sending one impulse over theline in reverse direction and proceed with the usual step up Thlsimpulse in reverse direcon the line except the one which is being heldby the subscriber in as much as this :reverse impulse is the operationwhich re turns all instruments to normal under-ordinary circumstancesand at the beginning all the calling operation of the instruments on theline are in the normal condition. However, the reverse impulse willaffect the instrument being held to step the sector 7 up one stepwhereby the actuating pawl 8 will engage the second or shallow notch ofthe series and thereby break the talking circuit. When the slidingmember 24 is being held in operated position by the depression of thebutton 25 the polarized armature 17 is moved by the sliding member 24against the influence of the magnet 4 into the path of the stud 18 asshown more particularly in detail in Fig. 10. However. upon the reversalof the electrical impulse through the magnet the polarized armature willbe swung independent of the sliding member 24 to a position beyond thestud 18 thereby permitting the armature 11 to be attracted by the magnetand the operating lever 911ml connecting pawl 8 to be oscillated inthensnalmanner to step up the sector 7 one or advantages. n.

more notches. After this has been accompllshed the remaining instrumentson the line may he stepped up by impulses sent in the normal directionwhich impulses will return the-polarized armature of the unrulysubscribers instrument into the path'of the stud l8 and thereby preventthe operation of his instrument to further step up the instrument if hecontinues to hold theslide member 24 in operated position.

From the above description it will be apparent that there is thusproduced a-device of the character described possessing the particularfeatures of advantage-before-enumerated as desirable but which obviouslyis8 susceptible of modification in its form, de-

' tail construction,proportion, and. arrangevment of parts, .withoutdeparting from the principle involved or sacrificing any of its Havingthus described my invention, I claim:

1. In a device as described,- the combination with two electric circuitsof a stationary terminal peculiar to one of said circuits. a-l movableterminal common to both these circuits, and a yielding terminal peculiarto the other circuit interposed betweensaid movable and stationaryterminals and means for electrically controlling saidiimovable termis95nal whereby one or both, of said circuits may be closed by the movementthereof, sub stantially as specified.

2. In a. device as described, the combinationwith a plurality ofelectric circuits. 01521 a stationary terminalin one of the circuits,

a movable terminal. common to all the circuits, and a yieldingterminalin a second of said circuits interposed between said stationaryand movable terminals, means for auto#- matically actuating said movableterminal. from av distant station, means for limiting the movementthereof whereby said-movable terminal may be permitted to engage theyielding terminal and thereby close one of said circuits, or byadditional movement, cause the engagement of said yielding andstationary terminals and thereby close an additional circuit,substantially as specified. 3. In a device as described, the combina-.

'tionwith a plurality of electric circuits, of

a stationary terminal, a movable terminal carried on an oscillatinglever, an electromagnet adapted to oscillate said lever, amovable stopmember adapted to arrest the oscillation of the-lever in predeterminedpositions. means for varying said stop membcr wheroby the lever will bepermitted different, degrees of movement. a yielding ter- 125nlinalinterposed between the movable and stationary terminals andadapted to be engaged by the movable terminal and upon furthermoven'lent thereof to engage the star t-ionary terminal substantially asspecified.

4:. Ina device as described, the combination with a plurality ofelectric circuits, of

a stationary terminal, a movable terminal and a yieldlng terminalinterposed between theist'ationary and movable terminals with which themovable terminal is normally in contact, a controlling device for saidmovable terminal adapted upon its initial move-' ment to break thecontact of the movable and yielding'terminals and upon a predeterminedadditional movement to permit the simultaneous intere'ngagement of allthree of saidterminals, substantially as specified.

ated by the subscriber rendering the andbrea'k vdevices,

' a series'of'separate lIlCllldll'lgf fln oscillating lever,

, arresting-the oscillation 5.1 In a device as described, a pluralityof'electric circuits, circuit make and break mechanism thereforopstation, means open for arresting the operation of the controlmechanism and mainmechanism, control I erated from a distant 'tainingthe instrument in normal condition while permitting other instruments onthe common line to be controlled thereby, and means operated from a.distant station for subscr'ibers arresting device ineffective,substantially as specified.

- 6;:Irifia device as described, circuit make mechanism operatedelectric impulses and means for lever at thefor comprising step-up ofthe will of the subscriberand thereby renderm r the {stepmp mechanismin-operative, an

' means,controlled from adistant point'for releasing the lever from thecontrol of the subscriber,substantially as specified.

" '2. In a device as described, circuitmake and break devices, controlmechanism therefor comprising step-up mechanism operate by a ser es ofseparate electric impulses meluding anoscillating-lever, a movable stoposcillated from its member normally out of the path of the lever but,capable of being moved into said path by the subscriberptherebyrendering the si e -up-mechanism iii-operative an maintaining theinstrument in normal condition, substantially-as specified,

8-. In a device as described, circuit make and break devices, includingan oscillatory notched sector, a pawl successively engaging the notchesthereof to oscillate said sector, a n electromagnet and an armaturecooperating there- Wltll to actuate said control mechanism there-' amagnet, substantially as specified;

,and break. devices, control devices therefor iincluding a movablemember having a series io-f ratchet teeth therein, a pawl engaging {saidratchet teeth to advance said member ;through a magnet-and an armaturecooperating therewith to actuate said pawl, a polarized armature movableinto and out of the path of the actuating armature according to thedij-rection of current net, means for. manually moving saidpolargizedarmature into the. path of the actuatd vthereby preventing theoscillation of the control devices therefor 4 v and break devices}including a ,electromagnet and an armature ingtherewith to v iizedarmature movable into andi cut of the,

maintaining i said reciprocating 1 member Z v including a movable memberhaving a series of ratchet teeth therein, a pawl engaging said ratchetteeth to advance said ,member through a predetermined path, anelectromagnet and an ar mature coiiperating therewith to actuate saidpawl, a detent' lever engaging the movablemember and maintaining it inits operated position, a polarized armature movable intoand out ofthepath of the actuating armature and adapted when actuated thereby tocause the withdrawal of the detentdeyen from said movable member,substantially as specified. i 10. In a device as described,circuit makeand break devices, control devices therefor includingEa movablg memberhaving a series of ratchet'teeth said ratchet teethl to advance saidmember through a predetermined path, an electromagnet and-an'armaturecooperating there- 1 ,with to actuate said pauil, a true movable intoand the actuating armature according to the ditherein, a pawl engagingpolarized armaout' of the path of rection of current through saidelectromag-= net, means for manually movmg sa d polar ized armatureinto, the path of the actuating armature against the mfluence of said11. In a device as described, circultmake predetermined path, anelectrothrough said electromag ling armature against the influence ofsaid magnet, and for maintaining the polarized armature immovable in itsadjusted position,

actuating armature and rendering the actuating pawl 1n-operat1ve,substantially as specified;

, 12. In a deizice as described, circuit: make pathof the actuatingarmatureaccordingi tothe direction of current through saidelectromagnet, a manually ,operated recip- 1 "rocating member adapted toengage the polarized armature and move it into the path ottheactuat-ingarmature against the influence of the electromagnet', aportionr'on projecting into control devices therefor..:,1;1

through a predetermined path f'an A the path of the polarized armature'andpreventing the oscillation thereof when en gaged by the actuatingarmature-, substan- .tially as I specified" 4 13: In a'device asdescribed, circuit make.

and break device s, control devices therefor includlng a movable memberhaving a se ries ofratchet'teeththerein, a pawlengaging said ratchetteeth-to advance said memberthrough a predetermined path, anelectromagnet and an armature cooperating therewith to actuate saidpawl, a doubly pivoted polarized. armature capable of an oscillatorymovement-i into and out, ofthe path of the actuating armature, andwhenin the pat-h of'said armature capable of oscillatory movement in unisontherewith, substantially as specified. 14. In a device as described,circuit make and break devices, control'd'evices therefor including amovable member having a series of ratchet .teeth therein, a pawlengag- 1turn thereof so moved adapted to cause the release of the controlmechanism and permit the reto' normal, substantially: as specified. v I

15. In a device .as described, circuit make and break'devices, controldevices therefo-r including a movable member having a serics of ratchetteeth therein, a pawl engaging sa'id ratchet teeth to advance saidmember through a predetermined path,'an el ectro magnet and an armaturecooperating therewith to actuate said pawl, a polarized armature movableinto and out of the path of the actuating armature and further capableof movement in a-plan'e at substantially right angles to the firstmovement, and

manually operated means to prevent the secend movement thereof,substantially as and for thepurpose specified.

, 16."-In a device as described, circuit make and break devices, controldevices therefor including a movable member having a se ries of ratchetteeth therein, a pawl engagingsaidratchet teeth to advance said memberthrough a predetermined. path, an electromagnet and an armaturecooperating therewith to, actuate said pawl, manually operated means forarresting and maintaining..sa1dpawl in inoperative condition against theinfluence of the electromagnet,

substantially as specified.

l7. Ina device as described," the combination with a plurality ofelectric circuits, of a controlling device therefor comprising a movitsrelation to static ary or more of said circuits according to the pointof said stop member engaged by the lever, and meansto vary the said stopmember, substantially as specified.

\ 18. In a device asdescribed, the combination with a plurality ofelectric circuits, of

a controlling device therefor, comprising an oscillatingsector havingpoints thereon at different. distances from the axis, a pivoted.

lever, a m va-ble terminal carried by said lever, means on said leverengaging said sector, whereby said, leverv will be varied in parts ofthe device asthe eng'agemenho said lever with said sector is-at a pointof\%reater or less distance from the axis where said movable terminalwill be caused lZOmClOSG one or more of said electric circuitsoitnvhereby said circuits will be maintaine topen according to the pointof said sector engaged by the lever, substantially as specified.

19. In a deviceas described, a plurality of electric circuits, a pivotedlever, a movable terminal carried by said lever, means for oscillatingsaid 1ever,a variable stop for the lever comprising. an oscillatingsector,

means for varying said stop whereby said lever may be oscillated to agreater or less degree thereby maintaining said electric circuits openor'olosing one or more of said circuits according to the degree ofoscillation permitted the lever by said variable stop, substantially asspecified.

2O. In a device as described, a plurality of electric circuits, apivoted lever, a'movable terminal carried by said lever, means foroscillating saidlever, a variable stop to limit the oscillations of thelever in one direction comprising a pivoted sector having portionsthereon engaged by said lever at different distances fromthe pivotalpoint thereby permitting said lever to oscillate throughout a greater orless degree and means to bring the different portions of said sector tothe engaging point whereby said movable terminal carried by the leverwill close one or more of circuits ormaintain said circuitsin opencondition according to the portion of the stop engaged, substantially asspecified. l

21. In a, device as described, a plurality of electric circuits, meanstomake and break said circuits includinga pivoted lever, a movableterminal carried by said lever, an oscillating sector adapted to limitthe movement of said lever, engaging oints on said sectorat differentdistances mm the axis sector and pivoted lever, substantiailyas cultsopen according to the degree of such" oscillation, and. means tooscillate both said specified.

22. In a device as described, circu t make and break devices, a pivotedlei er controlling said devices, an electromagnet and an armatureadapted to oscillate said pivoted lever through the attraction of saidarmature by the magnet, and a polarized armature adapted to limit theoscillation of said lever, said polarized armature being movable intoand out of operative posit1on according tothe direction of currentthrough said magnet. v

23. In a device asdescribed, circuit make and break devices, a pivotedlever controlling said devices, an electromagnet and an armature adaptedto oscillate said pivoted lever through the attraction of said arma--ture by the magnet, and a polarized armature adapted to limit theoscillation of said lever, said polarized armature being movable intoand outv of operative position according to the direction of currentthrough said magnet, andmeans to manually move said polarized armatureinto operative position against the influence of the magnet.

'24. In a device as described, circuit make and break devices, a pivotedlever controlling said devices, an electromagnet and an armature adaptedto oscillate said pivoted lever through the attraction of said armature'by the magnet, and a stop member manually movable into the path of thelever to prevent the oscillation thereof under the influence of themagnet, substantially as specified.

25. In a device as described, circuit-make and break devices, a pivotedlever controL ling said devices, an electromagnet and an armatureadapted to oscillate said pivoted lever through the attraction of saidarmature by the magnet, manually operated means to-prevei'it theoscillation of the pivoted lever against the influence. of the magnet,and means whereby the said manually operated means willbe renderedinefiective and the pivoted lever releasedby'areversal of the currentthrough the magnet.

- 26-pin adevi'ce as describedpcircuit make and break devices, a pivotedlever controlling. said devices, an electromagnet and an armatureadapted to oscillate-said pivoted lever through the attraction of saidarmature by the magnet, a stop member movable into engagement with saidlever and adapted to be moved therefrom. by the influence of saidmagnet.

la a devi e as de bed, an el m-ri circuit, circuit make and breakdevices, controlling means therefor, an electromagnet and an. armatureactuating said control devices, manually operated means for maintamingthe control devices inoperatlve against the influence of the magnet, andelectrically operated means for rendering said turning the controldevices to operation.

, 28. Ina device as described, an electric circuit, circuit make andbreak'devices, controlling means therefor, an electromagnet and animmature actuating said control devices,jmanually operated means formaintaining the control devices inoperative against the influence of themagnet, and means, whereby said manually operated means will be renderedinefiective and the control devices released by a reversal of thedirection of the current through said magnet.

29. In a device as described, circuit make and break devices, a pivotedlever controlling said devices, an electromagnet and an armature adaptedto oscillate said pivoted lever through the attraction of said armatu'reby the magnet, a stop member movable into engagement with said lever andadapted to be moved therefrom'by the influence of said magnet, and anelectric switch in said circuit opened by the operation of said manuallyoperatedmeans. v

30. In a signaling apparatus, circuit make and break devices, a variablestop member, a movable member the movement of which is limited by saidstop member, said movable member being adapted by its movement toactuate the stop member through a predetermined path of travel until thestop member reaches a predetermined position when themovable member willbe permitted a greater degree of movement whereby it will cperate thecircuit make and break devices.

31. In a si nalin a aratus circuit make and break devices, a. movableoperating operating member an additional degree or" movement when thestop member has been such additional degree of movement will operate-themake and break devices.

32. In a signaling apparatus, a talking circuit, make and break devicesin said circuit, control mechanism for said make and break devicesoperated from a distant station, a manually operated stop adapted topositively lock the make and'break devices against movement therebyneutralizing he manually operated means ineffective and removed to apredetermined position whereby distant operation of the controlmechanism In testimony whereof, I have hereunto set and lc frevlfntingthe o ialeration of the make my hand this 12th day of April A. D. 1909.and tea devices of t e neutralized instru- 1- ment While the make andbreak devices of DANIEL KNEISLY' the talking circuits of otherinstruments on Witnesses: the comrnon line are controlled by the dis-HARRY F. NOLAN, tantoperation. j MABEL B. CARR.

